Arrangement tor lubricating pistons



UNTTED sTATEs PATENT OEEIOE.'

BENJAMIN GARVEY, OF NEW YORK, N. Y., A'SSIGNOR TO HIMSELF AND JOSEPHL B. DAVOL,

OE BROOKLYN, NEW YORK.

ARANGEMENT FOR ITU'BRICATING PISTONS.

To all 'whom 'it may concern:

Be it known that I, BENJAMIN GARVEY, of the city,vcounty, and State ofNew York, have invented a new and Improved Device for' Lubricating YRubbing Surfaces; and I do hereby declare the following torbe a full, clear, and exact' description4 of the same, reference being. had to the accompanying drawings, makin a part of this speclcatlon.

The nature o my invention consists in forcing a film of water between rubbing surfaces during the moment while `they are 1n contact.

To enable others skilledin the arts to use my invention I will describe the application of it to the lubricating of the l/pi's'ton and cylinder o f an engine worked by superheated steam or by the products of combustion, as any workman understanding how to apply it in that case c an readily'apply it to lubricating journals, valves, etc.

The accompanying drawings are aneleva# tion and a section of the cylinder of such an engine with all the details omitted except suchas are essential to the description of my invention.

B is a small Iforce pump, of the fire-engine type, attached to and moving with the piston rod.

A is the air chamber belongingto the pump B for renderingthe discharge from the pump uniform.

C is a recoil spring, which by its expansionr draws the plunger forward'andsucks some suitable reservoir of water elther by a I regulated by the length of stroke of the n pump, so as to be about equal to that of the steam. The water consequently dozes out at the exhaust side, and lubricates the cylinder 0immedlately in advance of the piston.

.At everyor alternate stroke of the piston, the

plungerrod of the, pump comes incontact with the cam, F, anda portion of water is driven into chamber,` A`, from which it is 'forced. along through the hole, D, ducts,-

E E, and'A grooves in the. rim. At the alternate stroke of the piston, the spring, c, which was compressed by the' cam, F, expands and gives the suction stroke by which the pumip inder when lthe piston `has passed along is flashed into steam by the extra lieat' in the superhea'ted steam, which extra heat'would char or Adesiccate any lubricant but water.

- l l The combination and arrangement of a ,the piston, for the pressure of the Water is 1s filled. The Lfilm of water left onv lthe cy v lubricator with a piston and cylinder, a y

valve, or othei` bearing, for forcing water between rubbing surfaces substantlally fas described.`

BENJAMIN GARVE'Y. Witnesses:

WM. H, VAN vobma. GEO. W. BANTA,.jr. 

